Shells Helmets should be produced in four colors: white – for executives of organizations and enterprises, heads of sections and shops, public labor inspectors, workers Safety Officer; red – for the masters, foremen, engineers, chief engineers and chief power engineers; yellow and orange – for workers and junior staff. For the manufacture of helmets should be applied materials allowed by Ministry of Health. The body and interior accessories helmets should be made of nontoxic materials and details directly in contact with skin, head and face, should not cause pathological changes in the skin. Materials must be resistant to the action of petroleum, acid-alkaline electrolyte, hot water (80 degrees C), disinfectants. Details of the internal equipment shall be constructed of a durable and elastic materials. The carrier tape (except the back of it) must be covered with perforated leather or imitation leather or other porous material that protects the skin from rubbing. Internal accessories Helmets must be capable of regulating the size, if necessary, the use of balaclavas, and helmets must allow movement when turning the head and works in an inclined position. Design A carrier strip and shock absorber should provide depth adjustment of landing helmet on his head.
Internal snap and chin strap should be removable and have a device for attachment to the body helmet. Mental belt should be adjusted in length, and mounting method must allow him a quick release. Outside of the shell helmets must be smooth, without cracks and bubbles. On the surface of the shell helmets insertions of a different color in an amount acceptable standards for materials. The inner surface of the shell helmets, as well as internal and external surfaces should be smooth snap-processed, and the edges and edge blunted.
The quality of welds on the inside snap must satisfy GOST 12.4.116. Lateral surface of the shell helmets must have ventilation openings with a total area of 200 sq. mm, tightly overlapped rotary shields. Mechanical strength, amortization, bond strength to the housing interior accessories helmets, flammability, elektrozaschitnye properties helmets should comply with GOST 12.4.128. When tested for perforations blows with an energy not less than 30 J corps helmets should exclude the possibility of penetration of the tip of the cone to the surface of the layout of the head. Helmets must retain the protective properties during the whole period of operation at an ambient temperature of minus 50 to plus 40 grad.S.